[Healeys] Healeys Digest, Vol 13, Issue 341

Allan Peters allan-peters at sky.com
Thu Sep 17 01:03:08 MDT 2020 

 Nice to see the Photo,                                    of  Werners   Healey BN1 on his driveway in Sept 2018.This was his Ebay ad Photo.Would like to think that this car has been preserved in its time capsule form as this look is to Die for !!!!!!!!!That  Healey ice blue has aged well and would bode well for an Oily Rag restoration.                                    Such a Rewarding Forum,                                                            Regards,     Allan                                                                                                                    
    On Tuesday, 15 September 2020, 19:06:33 BST, healeys-request at autox.team.net <healeys-request at autox.team.net> wrote:  
 
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Today's Topics:

  1. Re: [Healeys) 100-4 Heat Shield with Headers
      (larry at patersondesign.ca)
  2. Re: [Healeys) 100-4 Heat Shield with Headers (Michael Salter)
  3. Re: [Healeys) 100-4 Heat Shield with Headers (Charles Schott)
  4. Re: [Healeys) 100-4 Heat Shield with Headers (Bob Spidell)
  5. Changing my email address (John Harper)
 I found that an oil cooler works well to keep motor cool as well as water wetter in the rad.  Mind you I also have a wrapped exhaust and standard heat shield.  also I dont run a 100 fan but do have an electric one in front of the rad which is used occasionally.

Larry

On Mon, 14 Sep 2020 13:02:04 -0400 (EDT), Charles Schott via Healeys <healeys at autox.team.net> wrote:
 David, Forgot to mention that I'm running the 1 3/4 carbs. You can see from the pictures the 4 bolt SU gaskets. Regards, CharlieFrom: "David Nock BCS" <healeydoc at sbcglobal.net>
To: "Charles Schott" <schottc at knology.net>, "Bob Spidell" <bspidell at comcast.net>
Cc: healeys at autox.team.net
Sent: Monday, September 14, 2020 10:05:54 AM
Subject: Re: [Healeys] [Healeys) 100-4 Heat Shield with Headers Which carbs are you running the 100. We have a heat shield available for the 100M  with the 1 3/4 carbs available.   David Nock
healeydoc at sbcglobal.net
209 948 8767
www.britishcarspecialists.com Help us have our Founder Norman Nock inducteed into the
British Sportscar Hall of Fame, You can vote for your favorites
by visiting the site at.
www.britishsportscarhalloffame.org   From: Charles Schott via HealeysSent: Monday, September 14, 2020 6:44 AMTo: Bob SpidellCc: healeys at autox.team.netSubject: Re: [Healeys] [Healeys) 100-4 Heat Shield with Headers Bob, I did wrap the headers but I'm a belt and suspenders type of guy. Never intended it to be that much work, but once I started, I wasn't going to quit on it. I'm also going to install the triangular vents into the front wings which should help expel the heat. And I built a false floor on the driver's side to provide an air space that will act as an insulator. It gets hot in Florida. Regards, Charlie From: "Bob Spidell via Healeys" <healeys at autox.team.net>
To: healeys at autox.team.net
Sent: Sunday, September 13, 2020 11:31:10 PM
Subject: Re: [Healeys] [Healeys) 100-4 Heat Shield with Headers Well done, but I gotta ask, why not just wrap the headers?  On 9/13/2020 8:42 PM, Ray Juncal via Healeys wrote:
Wow, you had fun making that. Nice work. On Sunday, September 13, 2020, 3:38:08 PM PDT, Charles Schott via Healeys mailto:healeys at autox.team.net wrote:  After one more modification, the fifth one, to eliminate interference with the vacuum hose fitting, I can continue with mounting the carbs. Some, including me, might say it's been over engineered. Regards, Charlie  
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  I have had exactly the same results as Bob, as in "no noticeable change in temperature" despite those mods.
M
On Mon., Sep. 14, 2020, 12:21 p.m. Bob Spidell, <bspidell at comcast.net> wrote:

  Yeah, I've heard that too (usually from the 'hot rod guys'). I wrapped my BJ8's downpipes about 8yrs/40K or so miles ago, and when I rebuilt the engine 3 years ago I checked them; no evidence of any degradation.
 
 My thinking: Rust is, of course, oxidation. Water does not rust metal, it facilitates oxidation by providing a medium for electron transfer between the oxygen in the air and the iron in steel. Manifolds, downpipes and headers get hot enough that the water in the exhaust gasses stays vaporized (until shutdown). It cools and pools in the pipes and mufflers, which rust from the inside out. What's unclear to me is how wrap, or ceramic coating, which should theoretically keep more heat in the system affects the steel. I would expect some embrittlement from the heat cycling, but haven't seen it (yet). 
 
 FWIW, I had my exhaust manifold ceramic coated (Jet Hot) and downpipes wrapped, and didn't notice much, if any cooler running (I was disappointed). The side vents seem like they would help but, curiously, my BJ8 and BN2/100M behave exactly the same WRT engine temps. I expected the louvered bonnet to help prevent overheating, esp. at idle but ... nope.
 
 Bob
 
 
 On 9/14/2020 7:56 AM, Michael Oritt wrote:
  
 Common wisdom isthatexhaust wrapped to rusting out.  it took 15 years to happen on my car and I am not convinced even now that the wrap promoted or hastened the process. 
  Best--Michael Oritt   
  On Mon, Sep 14, 2020, 10:16 AM Charles Schott via Healeys <healeys at autox.team.net> wrote:
  
   Bob, 
  I did wrap the headers but I'm a belt and suspenders type of guy. Never intended it to be that much work, but once I started, I wasn't going to quit on it. I'm also going to install the triangular vents into the front wings which should help expel the heat. And I built a false floor on the driver's side to provide an air space that will act as an insulator. It gets hot in Florida. 
  Regards, 
  Charlie 
   From: "Bob Spidell via Healeys" <healeys at autox.team.net>
 To: healeys at autox.team.net
 Sent: Sunday, September 13, 2020 11:31:10 PM
 Subject: Re: [Healeys] [Healeys) 100-4 Heat Shield with Headers
 
  Well done, but I gotta ask, why not just wrap the headers?
 
 
 On 9/13/2020 8:42 PM, Ray Juncal via Healeys wrote:
  
  Wow, you had fun making that. Nice work.
  
      On Sunday, September 13, 2020, 3:38:08 PM PDT, Charles Schott via Healeys <healeys at autox.team.net> wrote:  
  
      After one more modification, the fifth one, to eliminate interference with the vacuum hose fitting, I can continue with mounting the carbs. Some, including me, might say it's been over engineered. 
  Regards, 
  Charlie 
       
    
  
 
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This car was not running when I bought it so I don't know how much difference the modifications will make.
Regards,
Charlie
From: "Michael Salter" <michaelsalter at gmail.com>
To: "Bob Spidell" <bspidell at comcast.net>
Cc: "Austin Healey" <healeys at autox.team.net>
Sent: Monday, September 14, 2020 5:10:33 PM
Subject: Re: [Healeys] [Healeys) 100-4 Heat Shield with Headers

I have had exactly the same results as Bob, as in "no noticeable change in temperature" despite those mods.
M
On Mon., Sep. 14, 2020, 12:21 p.m. Bob Spidell, <bspidell at comcast.net> wrote:

Yeah, I've heard that too (usually from the 'hot rod guys'). I wrapped my BJ8's downpipes about 8yrs/40K or so miles ago, and when I rebuilt the engine 3 years ago I checked them; no evidence of any degradation.
 
 My thinking: Rust is, of course, oxidation. Water does not rust metal, it facilitates oxidation by providing a medium for electron transfer between the oxygen in the air and the iron in steel. Manifolds, downpipes and headers get hot enough that the water in the exhaust gasses stays vaporized (until shutdown). It cools and pools in the pipes and mufflers, which rust from the inside out. What's unclear to me is how wrap, or ceramic coating, which should theoretically keep more heat in the system affects the steel. I would expect some embrittlement from the heat cycling, but haven't seen it (yet). 
 
 FWIW, I had my exhaust manifold ceramic coated (Jet Hot) and downpipes wrapped, and didn't notice much, if any cooler running (I was disappointed). The side vents seem like they would help but, curiously, my BJ8 and BN2/100M behave exactly the same WRT engine temps. I expected the louvered bonnet to help prevent overheating, esp. at idle but ... nope.
 
 Bob
 
 
On 9/14/2020 7:56 AM, Michael Oritt wrote:

Common wisdom isthatexhaust wrapped to rusting out.  it took 15 years to happen on my car and I am not convinced even now that the wrap promoted or hastened the process.
Best--Michael Oritt 
On Mon, Sep 14, 2020, 10:16 AM Charles Schott via Healeys <healeys at autox.team.net> wrote:

Bob,
I did wrap the headers but I'm a belt and suspenders type of guy. Never intended it to be that much work, but once I started, I wasn't going to quit on it. I'm also going to install the triangular vents into the front wings which should help expel the heat. And I built a false floor on the driver's side to provide an air space that will act as an insulator. It gets hot in Florida.
Regards,
Charlie
From: "Bob Spidell via Healeys" <healeys at autox.team.net>
 To: healeys at autox.team.net
 Sent: Sunday, September 13, 2020 11:31:10 PM
 Subject: Re: [Healeys] [Healeys) 100-4 Heat Shield with Headers

Well done, but I gotta ask, why not just wrap the headers?
 
 
On 9/13/2020 8:42 PM, Ray Juncal via Healeys wrote:

Wow, you had fun making that. Nice work.

On Sunday, September 13, 2020, 3:38:08 PM PDT, Charles Schott via Healeys <healeys at autox.team.net> wrote:

After one more modification, the fifth one, to eliminate interference with the vacuum hose fitting, I can continue with mounting the carbs. Some, including me, might say it's been over engineered.
Regards,
Charlie




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  Charlie,
 
 Sounds like you found the 'secret sauce.' Can I have some?
 
 Bob
 
 
 On 9/14/2020 9:54 AM, Charles Schott wrote:
  
  Bob, 
  I restored a 1960 BT7 about seven years ago with no special treatment to the exhaust system and it's never overheated here in Florida. That was a stainless steel system so I don't worry about the rust. 
  By the way, I'm adding a Le Mans kit to my 100-4 and will have it in the 100M registry. 
  Regards, 
  Charlie 
  
  
 
 Mark
After many years I am giving up the post of the British austin-healey club 100 register, but would still wish to have emails from the forum.
Is it possible for you to delete
ah100register at gmail.com  

and replace it with
ah100tech at gmail.com  

It is some time since I made a contribution for all your work. If you would like to make a suggestion, I would pay by paypal as here we have pounds sterling
Best wishes
John Harper
AHC UK 100 Register Secretary_______________________________________________
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